321403032313 has 4 divisors (see below), whose sum is σ = 350621489808. Its totient is φ = 292184574820.

The previous prime is 321403032259. The next prime is 321403032323. The reversal of 321403032313 is 313230304123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313230304123 = 11 ⋅28475482193.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321403032313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321403032323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14609228731 + ... + 14609228752.

It is an arithmetic number, because the mean of its divisors is an integer number (87655372452).

Almost surely, 2^321403032313 is an apocalyptic number.

It is an amenable number.

321403032313 is a deficient number, since it is larger than the sum of its proper divisors (29218457495).

321403032313 is a wasteful number, since it uses less digits than its factorization.

321403032313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29218457494.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 321403032313 its reverse (313230304123), we get a palindrome (634633336436).

The spelling of 321403032313 in words is "three hundred twenty-one billion, four hundred three million, thirty-two thousand, three hundred thirteen".